2143242111 has 8 divisors (see below), whose sum is σ = 2878515504. Its totient is φ = 1418398400.

The previous prime is 2143242107. The next prime is 2143242169. The reversal of 2143242111 is 1112423412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2143242111 - 2² = 2143242107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143240111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2606940 + ... + 2607761.

It is an arithmetic number, because the mean of its divisors is an integer number (359814438).

Almost surely, 2^2143242111 is an apocalyptic number.

2143242111 is a deficient number, since it is larger than the sum of its proper divisors (735273393).

2143242111 is a wasteful number, since it uses less digits than its factorization.

2143242111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5214841.

The product of its digits is 384, while the sum is 21.

The square root of 2143242111 is about 46295.1629330754. The cubic root of 2143242111 is about 1289.3091890490.

Adding to 2143242111 its reverse (1112423412), we get a palindrome (3255665523).

The spelling of 2143242111 in words is "two billion, one hundred forty-three million, two hundred forty-two thousand, one hundred eleven".